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File:Dragonfly metamorphosis.jpg|thumb|A dragonfly in its final ecdysis|moult, undergoing metamorphosis from its nymph (biology)|nymph form to an adult '''Metamorphosis''' is a biological process by which an animal physically developmental biology|develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell cell growth#Cell reproduction|growth and cellular differentiation|differentiation. Some insects, fishes, amphibians, Molluska|mollusks, crustaceans, cnidarians, echinoderms and tunicates undergo metamorphosis, which is often accompanied by a change of nutrition source or behavior. Animals can be divided into species that undergo complete metamorphosis ("Holometabolism|holometaboly"), incomplete metamorphosis ("hemimetaboly"), or no metamorphosis ("ametaboly"). Scientific usage...
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